Six-Body and Eight-Body Exciton States in Monolayer WSe 2
Abstract
In the archetypal monolayer semiconductor WSe2, the distinct ordering of spin-polarized valleys (low-energy pockets) in the conduction band allows for studies of not only simple neutral excitons and charged excitons (i.e., trions), but also more complex many-body states that are predicted at higher electron densities. We discuss magneto-optical measurements of electron-rich WSe2 monolayers and interpret the spectral lines that emerge at high electron doping as optical transitions of six-body exciton states (“hexcitons”) and eight-body exciton states (“oxcitons”). Additionally, these many-body states emerge when a photoexcited electron-hole pair interacts simultaneously with multiple Fermi seas, each having distinguishable spin and valley quantum numbers. In addition, we explain the relations between dark trions and satellite optical transitions of hexcitons in the photoluminescence spectrum.
- Authors:
-
[1];
[1]
- Univ. of Rochester, NY (United States)
- Rensselaer Polytechnic Inst., Troy, NY (United States)
- Univ. of Washington, Seattle, WA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF); US Office of Naval Research (ONR)
- OSTI Identifier:
- 1893679
- Report Number(s):
- LA-UR-22-21272
Journal ID: ISSN 0031-9007; TRN: US2310217
- Grant/Contract Number:
- 89233218CNA000001; SC0014349; N000142112448; DMR-1644779; SC0018171; DMR-1945420; DMR-2104902
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 129; Journal Issue: 7; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; High Magnetic Field Science; excitons; magneto-optics; trions; transition metal dichalcogenides
Citation Formats
Van Tuan, Dinh, Shi, Su-Fei, Xu, Xiaodong, Crooker, Scott A., and Dery, Hanan. Six-Body and Eight-Body Exciton States in Monolayer WSe2. United States: N. p., 2022.
Web. doi:10.1103/physrevlett.129.076801.
Van Tuan, Dinh, Shi, Su-Fei, Xu, Xiaodong, Crooker, Scott A., & Dery, Hanan. Six-Body and Eight-Body Exciton States in Monolayer WSe2. United States. https://doi.org/10.1103/physrevlett.129.076801
Van Tuan, Dinh, Shi, Su-Fei, Xu, Xiaodong, Crooker, Scott A., and Dery, Hanan. Tue .
"Six-Body and Eight-Body Exciton States in Monolayer WSe2". United States. https://doi.org/10.1103/physrevlett.129.076801. https://www.osti.gov/servlets/purl/1893679.
@article{osti_1893679,
title = {Six-Body and Eight-Body Exciton States in Monolayer WSe2},
author = {Van Tuan, Dinh and Shi, Su-Fei and Xu, Xiaodong and Crooker, Scott A. and Dery, Hanan},
abstractNote = {In the archetypal monolayer semiconductor WSe2, the distinct ordering of spin-polarized valleys (low-energy pockets) in the conduction band allows for studies of not only simple neutral excitons and charged excitons (i.e., trions), but also more complex many-body states that are predicted at higher electron densities. We discuss magneto-optical measurements of electron-rich WSe2 monolayers and interpret the spectral lines that emerge at high electron doping as optical transitions of six-body exciton states (“hexcitons”) and eight-body exciton states (“oxcitons”). Additionally, these many-body states emerge when a photoexcited electron-hole pair interacts simultaneously with multiple Fermi seas, each having distinguishable spin and valley quantum numbers. In addition, we explain the relations between dark trions and satellite optical transitions of hexcitons in the photoluminescence spectrum.},
doi = {10.1103/physrevlett.129.076801},
journal = {Physical Review Letters},
number = 7,
volume = 129,
place = {United States},
year = {Tue Aug 09 00:00:00 EDT 2022},
month = {Tue Aug 09 00:00:00 EDT 2022}
}
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